Chapter 11 Multiple Regression
True/False Questions
1. In regression analysis, every time that an insignificant and unimportant variable is
added to the regression model, the R2 decreases.
Answer: False Type: Concept Difficulty: Medium
2. The more variabl

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Chapter 10 Simple Linear Regression and Correlation
True/False Questions
1. In linear regression the dependent variable is denoted by y.
Answer: True Type: Concept Difficulty: Easy
2. is used to denote the population slope.
Answer: False Type: Concept Dif

Chapter 9 Analysis of Variance
True/False Questions
1. ANOVA is the preferred method for finding differences among several population
proportions.
Answer: False Type: Concept Difficulty: Easy
2. The sum of squares error and the sum of squares treatment ad

Chapter 14 Nonparametric Methods and Chi-Square Tests
True/False Questions
1. Nonparametric methods do not require assumptions of normality.
Answer: True Type: Concept Difficulty: Easy
2. The sign test is one of the nonparametric rank tests.
Answer: False

Chapter 17 Multivariate Analysis
True/False Questions
1. Most multivariate statistics routines use the normal distribution assumption.
Answer: True Type: Concept Difficulty: Easy
2. MANOVA may be used as an aid in discriminant analysis.
Answer: True Type:

Chapter 15 Bayesian Statistics and Decision Analysis
True/False Questions
1. A Bayesian statistician will never use any prior information.
Answer: False Type: Concept Difficulty: Easy
2. Statisticians who use the normal distribution are called Bayesians.

Chapter 16 Sampling Methods
True/False Questions
1. Stratified random sampling cannot be utilized if the factor weights are not known prior
to analysis.
Answer: False Type: Concept Difficulty: Medium
2. Judgmental sampling never occurs in the real world.

Chapter 13 Quality Control and Improvement
True/False Questions
1. When using control charts, it is assumed that the variable in question is at least
approximately normally distributed.
Answer: True Type: Concept Difficulty: Easy
2. When an observation is

Chapter 12 Time Series, Forecasting, and Index Numbers
True/False Questions
1. The error in a time series model, at, serves the same purpose as in the regression
model.
Answer: True Type: Concept Difficulty: Easy
2. The random error at time at, has the sa

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